Provided is a bio-endoscopic marking solution which includes a pigment, a carrier, and water, wherein the pigment contains at least one selected among titanium black, black iron oxide, and a combination thereof. According to the present invention, the bio-endoscopic marking solution exhibits excellent dispersibility.COPYRIGHT KIPO 2016안료, 운반체 및 물을 포함하고, 상기 안료는 티탄블랙, 흑색 산화철 및 이들의 조합으로부터 선택된 하나를 포함하는 생체용 내시경 표시액이 제공된다.